旅游对传统地域文化景观影响的研究进展及展望

传统地域文化景观是传承地域文化的物质载体,是人类宝贵的文化遗产和景观财富。作为新兴的重要发展力量,旅游正在不可逆转地改变着传统地域文化景观的演变进程。本文从物质文化景观、非物质文化景观、文化景观地方意义等方面综述了旅游对传统地域文化景观影响的研究成果,对现有研究进行了述评。最后从亟须解决的关键科学问题、研究内容两个方面进行了未来研究展望。     

图们江三角国际合作开发中各国战略对策分析

本文从分析目前图们江下游三角地区多国合作开发规划的意义和特点入手。着重以世界格局与地缘经济角度剖析有关国家的战略对策及其演变过程,同时指出我国应采取的一些重要措施以推进该规划的实现,并取得于我有利的结果。     

How police agency diversity,policies, and outcomes shape citizen trust and willingness to engage

While widespread agreement that policing in the United States needs to be reformed arose in the summer of 2020, little consensus about specific reforms was reached. A common theme that arose, however, is a general lack of trust in the police. One response has been to increase agency diversity in terms of both officer race and officer gender. However, important questions exist about when – and what type(s) of – diversity shape citizen trust in and willingness to cooperate with the police – especially when considered in conjunction with agency performance and policies. To answer these questions, we use two conjoint experiments to evaluate whether citizens consider diversity when evaluating police agencies. We find that while both racial and gender diversity can influence public evaluations sometimes, these effects tend to emerge in the context of only the most (least) diverse institutions and are muted compared to the effects of agency policies and performance.     

帛书《老子》异文商榷

自帛书《老子》甲、乙本问世以来,学界即予以极大的关注.将帛书《老子》两种本子同传世诸种《老子》版本对勘,无论在字句还是篇章结构上都存在着显著的不同.     

New Estimates of Gravitational Attraction by Linear Programming

This paper uses data for intercity air-passenger travel to derive a set of general propulsion and attraction factors for twenty-five large U.S. cities. The paper develops a new way of examining the linkages between flows and nodal attraction. The technique is to assume that the flow data fit a simple gravity model, and then linear programming is used to maximize the consistency of the endogenous propulsion and attraction with the flow data. Various linear models are used to determine the pattern of urban attraction factors that are consistent with the gravitational flows. Linear programming as well as goal programming models are used to develop a set of analyses linking flows to urban hierarchies. Suggestions for further extensions of the method to address substantive issues of urban systems analysis are also provided.     

明代应天巡抚辖区考辨——兼论“飞地”承天府的归属

明代的应天巡抚,直接渊源自洪熙元年设于南直、浙江二省的巡抚。至宣德五年初设时,其辖区应为南直隶应天等十一府州,而非以往学界认为的仅辖苏州、松江、常州三府。正统间,因浙江巡抚的废置,加之出于综合督理太湖流域税粮、水利事务的需要,其辖区遂长期扩展至浙西杭州、嘉兴、湖州三府,统十四府州之地。湖广承天府在嘉靖十四年后一直属湖广巡抚辖区,从未隶应天巡抚管辖。学界所习称的嘉靖十四年至隆庆初应天巡抚一度辖有承天府这一“飞地”的说法,并不足以凭信。这一观点的产生,源于研究者受到了现行《明世宗实录》中相关记载的误导。     

Fluid inclusion and isotopic constraints on the origin of ore‐forming fluid of the Jinman–Liancheng vein Cu deposit in the Lanping Basin,western Yunnan,China

Extensive quartz–carbonate–Cu sulfide veins occur in clastic rocks and are spatially related to Paleocene granites in the western border of the Lanping Basin, western Yunnan, China. Abundant aqueous‐carbonic fluid inclusions occur in these veins but their origin is debated. In the Jinman–Liancheng deposit, individual primary inclusion groups contain either exclusively liquid‐rich inclusions (Gl), or coexisting liquid‐rich and vapor‐rich inclusions (Glv). Microthermometry and estimate of CO₂ content indicate that type Gl inclusions either have homogenization temperatures (Th) 238–263°C and contain c. 3.9–5.5 mole % CO₂, or have Th 178–222°C and contain c. 1.6–3.2 mole % CO₂. Type Glv inclusions are thought to represent samples of fluid unmixing that occurred at 183–218°C. At that time, the liquid phase in the unmixing fluid may contain c. 2.0–3.3 mole % CO₂. As such, the correlation of CO₂ content with Th for type Gl inclusions is thought to be caused by fluid unmixing with decreasing temperature and subsequent CO₂ escape. δ¹⁸O and δD values of the parent water mainly fall in the field below that of primary magmatic water, indicative of fluid derivation from degassed (in open system) magmatic water, with no contributions from basinal or meteoric water. Initial Sr isotopic compositions of hydrothermal carbonates suggest that the fluid was magmatic, probably derived from the Paleogene granites. δ¹³C_PDB values (?4‰ to ?7‰) of the hydrothermal carbonates and δ³⁴S_V‐CDT values of sulfides (mainly ?11‰ to +5‰) indicate that the carbon and sulfur can be derived from (degassed) magma and/or nonmagmatic sources. The CO₂‐rich and magmatic‐water‐derived fluid at Jinman–Liancheng differs from the CO₂‐poor and basinally derived fluid in sediment‐hosted stratiform Cu (SSC) deposits, which suggests that there are no genetic linkages between the vein Cu and SSC deposits in the Lanping Basin.     

英国对台湾地区的政策特点及原因浅析(1950-1960年)

在东西方冷战的背景下,英国对台湾地区的政策受到多方面因素的影响,是一个棘手且无法回避的敏感问题。20世纪50年代,英国对台湾地区的政策呈现“政经分离”的特点:政治上保守慎重,强调与台湾当局保持距离;经济上积极主动,努力促进双方贸易的发展。英国政府之所以采取这一政策,不仅考虑到台海局势的严峻性、复杂性,也受英国重商主义传统与灵活务实外交思维的影响。英国对台湾地区的“政经分离”政策,使其在兼顾自身政治与经济利益的同时,也加剧了台海局势的复杂性。